When the resource levelling feature is activated, how does Project automatically resolve resource overallocations?

options:

	Custom options regarding resource levelling are entered by the user.
	Project increases the costs associated with the overallocated resources and the schedule remains unchanged.
	Project delays or splits resource work, thus delaying start times. The project finish date may or may not pushed back.
	Project delays or splits resource work, thus delaying start times. The project finish date is pushed back.